1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
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40 | #ifndef _WIN32 |
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41 | # include "config.h" |
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42 | #endif |
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43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
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45 | #include "ecb.h" |
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46 | |
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47 | #ifdef EIO_STACKSIZE |
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48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
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49 | #endif |
41 | #include "xthread.h" |
50 | #include "xthread.h" |
42 | |
51 | |
43 | #include <errno.h> |
52 | #include <errno.h> |
44 | #include <stddef.h> |
53 | #include <stddef.h> |
45 | #include <stdlib.h> |
54 | #include <stdlib.h> |
… | |
… | |
49 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
50 | #include <limits.h> |
59 | #include <limits.h> |
51 | #include <fcntl.h> |
60 | #include <fcntl.h> |
52 | #include <assert.h> |
61 | #include <assert.h> |
53 | |
62 | |
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63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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64 | /* intptr_t only comes from stdint.h, says idiot openbsd coder */ |
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65 | #if HAVE_STDINT_H |
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66 | # include <stdint.h> |
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67 | #endif |
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68 | |
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69 | #ifndef ECANCELED |
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70 | # define ECANCELED EDOM |
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71 | #endif |
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72 | #ifndef ELOOP |
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73 | # define ELOOP EDOM |
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74 | #endif |
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75 | |
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76 | #if !defined(ENOTSOCK) && defined(WSAENOTSOCK) |
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77 | # define ENOTSOCK WSAENOTSOCK |
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78 | #endif |
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79 | |
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80 | static void eio_destroy (eio_req *req); |
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81 | |
54 | #ifndef EIO_FINISH |
82 | #ifndef EIO_FINISH |
55 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
83 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
56 | #endif |
84 | #endif |
57 | |
85 | |
58 | #ifndef EIO_DESTROY |
86 | #ifndef EIO_DESTROY |
… | |
… | |
61 | |
89 | |
62 | #ifndef EIO_FEED |
90 | #ifndef EIO_FEED |
63 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
91 | # define EIO_FEED(req) do { if ((req)->feed ) (req)->feed (req); } while (0) |
64 | #endif |
92 | #endif |
65 | |
93 | |
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94 | #ifndef EIO_FD_TO_WIN32_HANDLE |
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95 | # define EIO_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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96 | #endif |
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97 | #ifndef EIO_WIN32_HANDLE_TO_FD |
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98 | # define EIO_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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99 | #endif |
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100 | |
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101 | #define EIO_ERRNO(errval,retval) ((errno = errval), retval) |
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102 | |
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103 | #define EIO_ENOSYS() EIO_ERRNO (ENOSYS, -1) |
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104 | |
66 | #ifdef _WIN32 |
105 | #ifdef _WIN32 |
67 | |
106 | |
68 | /*doh*/ |
107 | #undef PAGESIZE |
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108 | #define PAGESIZE 4096 /* GetSystemInfo? */ |
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109 | |
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110 | /* TODO: look at how perl does stat (non-sloppy), unlink (ro-files), utime, link */ |
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111 | |
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112 | #ifdef EIO_STRUCT_STATI64 |
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113 | /* look at perl's non-sloppy stat */ |
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114 | #define stat(path,buf) _stati64 (path,buf) |
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115 | #define fstat(fd,buf) _fstati64 (fd,buf) |
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116 | #endif |
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117 | #define lstat(path,buf) stat (path,buf) |
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118 | #define fsync(fd) (FlushFileBuffers ((HANDLE)EIO_FD_TO_WIN32_HANDLE (fd)) ? 0 : EIO_ERRNO (EBADF, -1)) |
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119 | #define mkdir(path,mode) _mkdir (path) |
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120 | #define link(old,neu) (CreateHardLink (neu, old, 0) ? 0 : EIO_ERRNO (ENOENT, -1)) |
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121 | |
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122 | #define chmod(path,mode) _chmod (path, mode) |
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123 | #define dup(fd) _dup (fd) |
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124 | #define dup2(fd1,fd2) _dup2 (fd1, fd2) |
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125 | |
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126 | #define fchmod(fd,mode) EIO_ENOSYS () |
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127 | #define chown(path,uid,gid) EIO_ENOSYS () |
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128 | #define fchown(fd,uid,gid) EIO_ENOSYS () |
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129 | #define truncate(path,offs) EIO_ENOSYS () /* far-miss: SetEndOfFile */ |
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130 | #define ftruncate(fd,offs) EIO_ENOSYS () /* near-miss: SetEndOfFile */ |
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131 | #define mknod(path,mode,dev) EIO_ENOSYS () |
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132 | #define sync() EIO_ENOSYS () |
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133 | #define readlink(path,buf,s) EIO_ENOSYS () |
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134 | #define statvfs(path,buf) EIO_ENOSYS () |
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135 | #define fstatvfs(fd,buf) EIO_ENOSYS () |
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136 | |
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137 | /* rename() uses MoveFile, which fails to overwrite */ |
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138 | #define rename(old,neu) eio__rename (old, neu) |
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139 | |
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140 | static int |
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141 | eio__rename (const char *old, const char *neu) |
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142 | { |
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143 | if (MoveFileEx (old, neu, MOVEFILE_REPLACE_EXISTING)) |
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144 | return 0; |
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145 | |
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146 | /* should steal _dosmaperr */ |
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147 | switch (GetLastError ()) |
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148 | { |
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149 | case ERROR_FILE_NOT_FOUND: |
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150 | case ERROR_PATH_NOT_FOUND: |
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151 | case ERROR_INVALID_DRIVE: |
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152 | case ERROR_NO_MORE_FILES: |
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153 | case ERROR_BAD_NETPATH: |
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154 | case ERROR_BAD_NET_NAME: |
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155 | case ERROR_BAD_PATHNAME: |
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156 | case ERROR_FILENAME_EXCED_RANGE: |
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157 | errno = ENOENT; |
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158 | break; |
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159 | |
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160 | default: |
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161 | errno = EACCES; |
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162 | break; |
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163 | } |
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164 | |
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165 | return -1; |
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166 | } |
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167 | |
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168 | /* we could even stat and see if it exists */ |
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169 | static int |
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170 | symlink (const char *old, const char *neu) |
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171 | { |
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172 | #if WINVER >= 0x0600 |
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173 | if (CreateSymbolicLink (neu, old, 1)) |
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174 | return 0; |
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175 | |
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176 | if (CreateSymbolicLink (neu, old, 0)) |
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177 | return 0; |
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178 | #endif |
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179 | |
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180 | return EIO_ERRNO (ENOENT, -1); |
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181 | } |
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182 | |
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183 | /* POSIX API only */ |
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184 | #define CreateHardLink(neu,old,flags) 0 |
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185 | #define CreateSymbolicLink(neu,old,flags) 0 |
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186 | |
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187 | struct statvfs |
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188 | { |
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189 | int dummy; |
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190 | }; |
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191 | |
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192 | #define DT_DIR EIO_DT_DIR |
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193 | #define DT_REG EIO_DT_REG |
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194 | #define D_NAME(entp) entp.cFileName |
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195 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
69 | |
196 | |
70 | #else |
197 | #else |
71 | |
198 | |
72 | # include "config.h" |
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73 | # include <sys/time.h> |
199 | #include <sys/time.h> |
74 | # include <sys/select.h> |
200 | #include <sys/select.h> |
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201 | #include <sys/statvfs.h> |
75 | # include <unistd.h> |
202 | #include <unistd.h> |
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203 | #include <signal.h> |
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204 | #include <dirent.h> |
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205 | |
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206 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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207 | #include <sys/mman.h> |
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208 | #endif |
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209 | |
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210 | #define D_NAME(entp) entp->d_name |
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211 | |
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212 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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213 | #if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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214 | #define _DIRENT_HAVE_D_TYPE /* sigh */ |
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215 | #define D_INO(de) (de)->d_fileno |
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216 | #define D_NAMLEN(de) (de)->d_namlen |
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217 | #elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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218 | #define D_INO(de) (de)->d_ino |
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219 | #endif |
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220 | |
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221 | #ifdef _D_EXACT_NAMLEN |
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222 | #undef D_NAMLEN |
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223 | #define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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224 | #endif |
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225 | |
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226 | #ifdef _DIRENT_HAVE_D_TYPE |
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227 | #define D_TYPE(de) (de)->d_type |
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228 | #endif |
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229 | |
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230 | #ifndef EIO_STRUCT_DIRENT |
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231 | #define EIO_STRUCT_DIRENT struct dirent |
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232 | #endif |
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233 | |
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234 | #endif |
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235 | |
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236 | #if HAVE_UTIMES |
76 | # include <utime.h> |
237 | # include <utime.h> |
77 | # include <signal.h> |
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78 | # include <dirent.h> |
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79 | |
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80 | # ifndef EIO_STRUCT_DIRENT |
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81 | # define EIO_STRUCT_DIRENT struct dirent |
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82 | # endif |
238 | #endif |
83 | |
239 | |
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240 | #if HAVE_SYS_SYSCALL_H |
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241 | # include <sys/syscall.h> |
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242 | #endif |
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243 | |
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244 | #if HAVE_SYS_PRCTL_H |
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245 | # include <sys/prctl.h> |
84 | #endif |
246 | #endif |
85 | |
247 | |
86 | #if HAVE_SENDFILE |
248 | #if HAVE_SENDFILE |
87 | # if __linux |
249 | # if __linux |
88 | # include <sys/sendfile.h> |
250 | # include <sys/sendfile.h> |
89 | # elif __freebsd |
251 | # elif __FreeBSD__ || defined __APPLE__ |
90 | # include <sys/socket.h> |
252 | # include <sys/socket.h> |
91 | # include <sys/uio.h> |
253 | # include <sys/uio.h> |
92 | # elif __hpux |
254 | # elif __hpux |
93 | # include <sys/socket.h> |
255 | # include <sys/socket.h> |
94 | # elif __solaris /* not yet */ |
256 | # elif __solaris |
95 | # include <sys/sendfile.h> |
257 | # include <sys/sendfile.h> |
96 | # else |
258 | # else |
97 | # error sendfile support requested but not available |
259 | # error sendfile support requested but not available |
98 | # endif |
260 | # endif |
99 | #endif |
261 | #endif |
100 | |
262 | |
101 | /* number of seconds after which an idle threads exit */ |
263 | #ifndef D_TYPE |
102 | #define IDLE_TIMEOUT 10 |
264 | # define D_TYPE(de) 0 |
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265 | #endif |
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266 | #ifndef D_INO |
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267 | # define D_INO(de) 0 |
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268 | #endif |
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269 | #ifndef D_NAMLEN |
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270 | # define D_NAMLEN(entp) strlen (D_NAME (entp)) |
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271 | #endif |
103 | |
272 | |
104 | /* used for struct dirent, AIX doesn't provide it */ |
273 | /* used for struct dirent, AIX doesn't provide it */ |
105 | #ifndef NAME_MAX |
274 | #ifndef NAME_MAX |
106 | # define NAME_MAX 4096 |
275 | # define NAME_MAX 4096 |
107 | #endif |
276 | #endif |
108 | |
277 | |
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278 | /* used for readlink etc. */ |
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279 | #ifndef PATH_MAX |
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280 | # define PATH_MAX 4096 |
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281 | #endif |
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282 | |
109 | /* buffer size for various temporary buffers */ |
283 | /* buffer size for various temporary buffers */ |
110 | #define EIO_BUFSIZE 65536 |
284 | #define EIO_BUFSIZE 65536 |
111 | |
285 | |
112 | #define dBUF \ |
286 | #define dBUF \ |
113 | char *eio_buf; \ |
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114 | ETP_WORKER_LOCK (self); \ |
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115 | self->dbuf = eio_buf = malloc (EIO_BUFSIZE); \ |
287 | char *eio_buf = malloc (EIO_BUFSIZE); \ |
116 | ETP_WORKER_UNLOCK (self); \ |
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117 | errno = ENOMEM; \ |
288 | errno = ENOMEM; \ |
118 | if (!eio_buf) \ |
289 | if (!eio_buf) \ |
119 | return -1; |
290 | return -1 |
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291 | |
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292 | #define FUBd \ |
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293 | free (eio_buf) |
120 | |
294 | |
121 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
295 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
122 | |
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123 | /*****************************************************************************/ |
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124 | |
296 | |
125 | #define ETP_PRI_MIN EIO_PRI_MIN |
297 | #define ETP_PRI_MIN EIO_PRI_MIN |
126 | #define ETP_PRI_MAX EIO_PRI_MAX |
298 | #define ETP_PRI_MAX EIO_PRI_MAX |
127 | |
299 | |
128 | struct etp_worker; |
300 | struct etp_worker; |
… | |
… | |
132 | static int eio_finish (eio_req *req); |
304 | static int eio_finish (eio_req *req); |
133 | #define ETP_FINISH(req) eio_finish (req) |
305 | #define ETP_FINISH(req) eio_finish (req) |
134 | static void eio_execute (struct etp_worker *self, eio_req *req); |
306 | static void eio_execute (struct etp_worker *self, eio_req *req); |
135 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
307 | #define ETP_EXECUTE(wrk,req) eio_execute (wrk,req) |
136 | |
308 | |
137 | #define ETP_WORKER_CLEAR(req) \ |
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138 | if (wrk->dbuf) \ |
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139 | { \ |
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140 | free (wrk->dbuf); \ |
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141 | wrk->dbuf = 0; \ |
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142 | } \ |
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143 | \ |
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144 | if (wrk->dirp) \ |
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145 | { \ |
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146 | closedir (wrk->dirp); \ |
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147 | wrk->dirp = 0; \ |
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148 | } |
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149 | #define ETP_WORKER_COMMON \ |
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150 | void *dbuf; \ |
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151 | DIR *dirp; |
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152 | |
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153 | /*****************************************************************************/ |
309 | /*****************************************************************************/ |
154 | |
310 | |
155 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
311 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
156 | |
312 | |
157 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
313 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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314 | ecb_inline int |
158 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
315 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
159 | { |
316 | { |
160 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
317 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
161 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
318 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
162 | } |
319 | } |
163 | |
320 | |
… | |
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167 | static void (*done_poll_cb) (void); |
324 | static void (*done_poll_cb) (void); |
168 | |
325 | |
169 | static unsigned int max_poll_time; /* reslock */ |
326 | static unsigned int max_poll_time; /* reslock */ |
170 | static unsigned int max_poll_reqs; /* reslock */ |
327 | static unsigned int max_poll_reqs; /* reslock */ |
171 | |
328 | |
172 | static volatile unsigned int nreqs; /* reqlock */ |
329 | static unsigned int nreqs; /* reqlock */ |
173 | static volatile unsigned int nready; /* reqlock */ |
330 | static unsigned int nready; /* reqlock */ |
174 | static volatile unsigned int npending; /* reqlock */ |
331 | static unsigned int npending; /* reqlock */ |
175 | static volatile unsigned int max_idle = 4; |
332 | static unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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333 | static unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
176 | |
334 | |
177 | static mutex_t wrklock = X_MUTEX_INIT; |
335 | static xmutex_t wrklock; |
178 | static mutex_t reslock = X_MUTEX_INIT; |
336 | static xmutex_t reslock; |
179 | static mutex_t reqlock = X_MUTEX_INIT; |
337 | static xmutex_t reqlock; |
180 | static cond_t reqwait = X_COND_INIT; |
338 | static xcond_t reqwait; |
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339 | |
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340 | #if !HAVE_PREADWRITE |
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341 | /* |
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342 | * make our pread/pwrite emulation safe against themselves, but not against |
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343 | * normal read/write by using a mutex. slows down execution a lot, |
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344 | * but that's your problem, not mine. |
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345 | */ |
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346 | static xmutex_t preadwritelock; |
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347 | #endif |
181 | |
348 | |
182 | typedef struct etp_worker |
349 | typedef struct etp_worker |
183 | { |
350 | { |
184 | /* locked by wrklock */ |
351 | /* locked by wrklock */ |
185 | struct etp_worker *prev, *next; |
352 | struct etp_worker *prev, *next; |
186 | |
353 | |
187 | thread_t tid; |
354 | xthread_t tid; |
188 | |
355 | |
189 | /* locked by reslock, reqlock or wrklock */ |
356 | /* locked by reslock, reqlock or wrklock */ |
190 | ETP_REQ *req; /* currently processed request */ |
357 | ETP_REQ *req; /* currently processed request */ |
191 | |
358 | |
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359 | #ifdef ETP_WORKER_COMMON |
192 | ETP_WORKER_COMMON |
360 | ETP_WORKER_COMMON |
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361 | #endif |
193 | } etp_worker; |
362 | } etp_worker; |
194 | |
363 | |
195 | static etp_worker wrk_first = { &wrk_first, &wrk_first, 0 }; /* NOT etp */ |
364 | static etp_worker wrk_first; /* NOT etp */ |
196 | |
365 | |
197 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
366 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
198 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
367 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
199 | |
368 | |
200 | /* worker threads management */ |
369 | /* worker threads management */ |
201 | |
370 | |
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371 | static void ecb_cold |
202 | static void etp_worker_clear (etp_worker *wrk) |
372 | etp_worker_clear (etp_worker *wrk) |
203 | { |
373 | { |
204 | ETP_WORKER_CLEAR (wrk); |
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205 | } |
374 | } |
206 | |
375 | |
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376 | static void ecb_cold |
207 | static void etp_worker_free (etp_worker *wrk) |
377 | etp_worker_free (etp_worker *wrk) |
208 | { |
378 | { |
209 | wrk->next->prev = wrk->prev; |
379 | wrk->next->prev = wrk->prev; |
210 | wrk->prev->next = wrk->next; |
380 | wrk->prev->next = wrk->next; |
211 | |
381 | |
212 | free (wrk); |
382 | free (wrk); |
213 | } |
383 | } |
214 | |
384 | |
215 | static unsigned int etp_nreqs (void) |
385 | static unsigned int |
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386 | etp_nreqs (void) |
216 | { |
387 | { |
217 | int retval; |
388 | int retval; |
218 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
389 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
219 | retval = nreqs; |
390 | retval = nreqs; |
220 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
391 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
221 | return retval; |
392 | return retval; |
222 | } |
393 | } |
223 | |
394 | |
224 | static unsigned int etp_nready (void) |
395 | static unsigned int |
|
|
396 | etp_nready (void) |
225 | { |
397 | { |
226 | unsigned int retval; |
398 | unsigned int retval; |
227 | |
399 | |
228 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
400 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
229 | retval = nready; |
401 | retval = nready; |
230 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
402 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
231 | |
403 | |
232 | return retval; |
404 | return retval; |
233 | } |
405 | } |
234 | |
406 | |
235 | static unsigned int etp_npending (void) |
407 | static unsigned int |
|
|
408 | etp_npending (void) |
236 | { |
409 | { |
237 | unsigned int retval; |
410 | unsigned int retval; |
238 | |
411 | |
239 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
412 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
240 | retval = npending; |
413 | retval = npending; |
241 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
414 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
242 | |
415 | |
243 | return retval; |
416 | return retval; |
244 | } |
417 | } |
245 | |
418 | |
246 | static unsigned int etp_nthreads (void) |
419 | static unsigned int |
|
|
420 | etp_nthreads (void) |
247 | { |
421 | { |
248 | unsigned int retval; |
422 | unsigned int retval; |
249 | |
423 | |
250 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
424 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
251 | retval = started; |
425 | retval = started; |
… | |
… | |
265 | } etp_reqq; |
439 | } etp_reqq; |
266 | |
440 | |
267 | static etp_reqq req_queue; |
441 | static etp_reqq req_queue; |
268 | static etp_reqq res_queue; |
442 | static etp_reqq res_queue; |
269 | |
443 | |
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|
444 | static void ecb_noinline ecb_cold |
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445 | reqq_init (etp_reqq *q) |
|
|
446 | { |
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447 | int pri; |
|
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448 | |
|
|
449 | for (pri = 0; pri < ETP_NUM_PRI; ++pri) |
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|
450 | q->qs[pri] = q->qe[pri] = 0; |
|
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451 | |
|
|
452 | q->size = 0; |
|
|
453 | } |
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454 | |
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|
455 | static int ecb_noinline |
270 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
456 | reqq_push (etp_reqq *q, ETP_REQ *req) |
271 | { |
457 | { |
272 | int pri = req->pri; |
458 | int pri = req->pri; |
273 | req->next = 0; |
459 | req->next = 0; |
274 | |
460 | |
275 | if (q->qe[pri]) |
461 | if (q->qe[pri]) |
… | |
… | |
281 | q->qe[pri] = q->qs[pri] = req; |
467 | q->qe[pri] = q->qs[pri] = req; |
282 | |
468 | |
283 | return q->size++; |
469 | return q->size++; |
284 | } |
470 | } |
285 | |
471 | |
|
|
472 | static ETP_REQ * ecb_noinline |
286 | static ETP_REQ *reqq_shift (etp_reqq *q) |
473 | reqq_shift (etp_reqq *q) |
287 | { |
474 | { |
288 | int pri; |
475 | int pri; |
289 | |
476 | |
290 | if (!q->size) |
477 | if (!q->size) |
291 | return 0; |
478 | return 0; |
… | |
… | |
306 | } |
493 | } |
307 | |
494 | |
308 | abort (); |
495 | abort (); |
309 | } |
496 | } |
310 | |
497 | |
311 | static void etp_atfork_prepare (void) |
498 | static int ecb_cold |
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|
499 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
312 | { |
500 | { |
313 | X_LOCK (wrklock); |
501 | X_MUTEX_CREATE (wrklock); |
314 | X_LOCK (reqlock); |
502 | X_MUTEX_CREATE (reslock); |
315 | X_LOCK (reslock); |
503 | X_MUTEX_CREATE (reqlock); |
316 | #if !HAVE_PREADWRITE |
504 | X_COND_CREATE (reqwait); |
317 | X_LOCK (preadwritelock); |
|
|
318 | #endif |
|
|
319 | } |
|
|
320 | |
505 | |
321 | static void etp_atfork_parent (void) |
506 | reqq_init (&req_queue); |
322 | { |
507 | reqq_init (&res_queue); |
323 | #if !HAVE_PREADWRITE |
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324 | X_UNLOCK (preadwritelock); |
|
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325 | #endif |
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326 | X_UNLOCK (reslock); |
|
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327 | X_UNLOCK (reqlock); |
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328 | X_UNLOCK (wrklock); |
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329 | } |
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330 | |
508 | |
331 | static void etp_atfork_child (void) |
509 | wrk_first.next = |
332 | { |
510 | wrk_first.prev = &wrk_first; |
333 | ETP_REQ *prv; |
|
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334 | |
|
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335 | while (prv = reqq_shift (&req_queue)) |
|
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336 | ETP_DESTROY (prv); |
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337 | |
|
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338 | while (prv = reqq_shift (&res_queue)) |
|
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339 | ETP_DESTROY (prv); |
|
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340 | |
|
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341 | while (wrk_first.next != &wrk_first) |
|
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342 | { |
|
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343 | etp_worker *wrk = wrk_first.next; |
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344 | |
|
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345 | if (wrk->req) |
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346 | ETP_DESTROY (wrk->req); |
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347 | |
|
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348 | etp_worker_clear (wrk); |
|
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349 | etp_worker_free (wrk); |
|
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350 | } |
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351 | |
511 | |
352 | started = 0; |
512 | started = 0; |
353 | idle = 0; |
513 | idle = 0; |
354 | nreqs = 0; |
514 | nreqs = 0; |
355 | nready = 0; |
515 | nready = 0; |
356 | npending = 0; |
516 | npending = 0; |
357 | |
517 | |
358 | etp_atfork_parent (); |
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|
359 | } |
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360 | |
|
|
361 | static void |
|
|
362 | etp_once_init (void) |
|
|
363 | { |
|
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364 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
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365 | } |
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366 | |
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367 | static int |
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368 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
|
|
369 | { |
|
|
370 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
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371 | |
|
|
372 | pthread_once (&doinit, etp_once_init); |
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373 | |
|
|
374 | want_poll_cb = want_poll; |
518 | want_poll_cb = want_poll; |
375 | done_poll_cb = done_poll; |
519 | done_poll_cb = done_poll; |
376 | |
520 | |
377 | return 0; |
521 | return 0; |
378 | } |
522 | } |
379 | |
523 | |
380 | X_THREAD_PROC (etp_proc); |
524 | X_THREAD_PROC (etp_proc); |
381 | |
525 | |
|
|
526 | static void ecb_cold |
382 | static void etp_start_thread (void) |
527 | etp_start_thread (void) |
383 | { |
528 | { |
384 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
529 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
385 | |
530 | |
386 | /*TODO*/ |
531 | /*TODO*/ |
387 | assert (("unable to allocate worker thread data", wrk)); |
532 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
400 | free (wrk); |
545 | free (wrk); |
401 | |
546 | |
402 | X_UNLOCK (wrklock); |
547 | X_UNLOCK (wrklock); |
403 | } |
548 | } |
404 | |
549 | |
|
|
550 | static void |
405 | static void etp_maybe_start_thread (void) |
551 | etp_maybe_start_thread (void) |
406 | { |
552 | { |
407 | if (etp_nthreads () >= wanted) |
553 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
408 | return; |
554 | return; |
409 | |
555 | |
410 | /* todo: maybe use idle here, but might be less exact */ |
556 | /* todo: maybe use idle here, but might be less exact */ |
411 | if (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ()) |
557 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
412 | return; |
558 | return; |
413 | |
559 | |
414 | etp_start_thread (); |
560 | etp_start_thread (); |
415 | } |
561 | } |
416 | |
562 | |
|
|
563 | static void ecb_cold |
417 | static void etp_end_thread (void) |
564 | etp_end_thread (void) |
418 | { |
565 | { |
419 | eio_req *req = calloc (1, sizeof (eio_req)); |
566 | eio_req *req = calloc (1, sizeof (eio_req)); |
420 | |
567 | |
421 | req->type = -1; |
568 | req->type = -1; |
422 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
569 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
429 | X_LOCK (wrklock); |
576 | X_LOCK (wrklock); |
430 | --started; |
577 | --started; |
431 | X_UNLOCK (wrklock); |
578 | X_UNLOCK (wrklock); |
432 | } |
579 | } |
433 | |
580 | |
434 | static int etp_poll (void) |
581 | static int |
|
|
582 | etp_poll (void) |
435 | { |
583 | { |
436 | unsigned int maxreqs; |
584 | unsigned int maxreqs; |
437 | unsigned int maxtime; |
585 | unsigned int maxtime; |
438 | struct timeval tv_start, tv_now; |
586 | struct timeval tv_start, tv_now; |
439 | |
587 | |
… | |
… | |
469 | |
617 | |
470 | X_LOCK (reqlock); |
618 | X_LOCK (reqlock); |
471 | --nreqs; |
619 | --nreqs; |
472 | X_UNLOCK (reqlock); |
620 | X_UNLOCK (reqlock); |
473 | |
621 | |
474 | if (req->type == EIO_GROUP && req->size) |
622 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
475 | { |
623 | { |
476 | req->int1 = 1; /* mark request as delayed */ |
624 | req->int1 = 1; /* mark request as delayed */ |
477 | continue; |
625 | continue; |
478 | } |
626 | } |
479 | else |
627 | else |
480 | { |
628 | { |
481 | int res = ETP_FINISH (req); |
629 | int res = ETP_FINISH (req); |
482 | if (res) |
630 | if (ecb_expect_false (res)) |
483 | return res; |
631 | return res; |
484 | } |
632 | } |
485 | |
633 | |
486 | if (maxreqs && !--maxreqs) |
634 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
487 | break; |
635 | break; |
488 | |
636 | |
489 | if (maxtime) |
637 | if (maxtime) |
490 | { |
638 | { |
491 | gettimeofday (&tv_now, 0); |
639 | gettimeofday (&tv_now, 0); |
… | |
… | |
497 | |
645 | |
498 | errno = EAGAIN; |
646 | errno = EAGAIN; |
499 | return -1; |
647 | return -1; |
500 | } |
648 | } |
501 | |
649 | |
|
|
650 | static void |
502 | static void etp_cancel (ETP_REQ *req) |
651 | etp_cancel (ETP_REQ *req) |
503 | { |
652 | { |
504 | X_LOCK (wrklock); |
653 | req->cancelled = 1; |
505 | req->flags |= EIO_FLAG_CANCELLED; |
|
|
506 | X_UNLOCK (wrklock); |
|
|
507 | |
654 | |
508 | eio_grp_cancel (req); |
655 | eio_grp_cancel (req); |
509 | } |
656 | } |
510 | |
657 | |
|
|
658 | static void |
511 | static void etp_submit (ETP_REQ *req) |
659 | etp_submit (ETP_REQ *req) |
512 | { |
660 | { |
513 | req->pri -= ETP_PRI_MIN; |
661 | req->pri -= ETP_PRI_MIN; |
514 | |
662 | |
515 | if (req->pri < ETP_PRI_MIN - ETP_PRI_MIN) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
663 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
516 | if (req->pri > ETP_PRI_MAX - ETP_PRI_MIN) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
664 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
517 | |
665 | |
|
|
666 | if (ecb_expect_false (req->type == EIO_GROUP)) |
|
|
667 | { |
|
|
668 | /* I hope this is worth it :/ */ |
518 | X_LOCK (reqlock); |
669 | X_LOCK (reqlock); |
519 | ++nreqs; |
670 | ++nreqs; |
|
|
671 | X_UNLOCK (reqlock); |
|
|
672 | |
|
|
673 | X_LOCK (reslock); |
|
|
674 | |
|
|
675 | ++npending; |
|
|
676 | |
|
|
677 | if (!reqq_push (&res_queue, req) && want_poll_cb) |
|
|
678 | want_poll_cb (); |
|
|
679 | |
|
|
680 | X_UNLOCK (reslock); |
|
|
681 | } |
|
|
682 | else |
|
|
683 | { |
|
|
684 | X_LOCK (reqlock); |
|
|
685 | ++nreqs; |
520 | ++nready; |
686 | ++nready; |
521 | reqq_push (&req_queue, req); |
687 | reqq_push (&req_queue, req); |
522 | X_COND_SIGNAL (reqwait); |
688 | X_COND_SIGNAL (reqwait); |
523 | X_UNLOCK (reqlock); |
689 | X_UNLOCK (reqlock); |
524 | |
690 | |
525 | etp_maybe_start_thread (); |
691 | etp_maybe_start_thread (); |
|
|
692 | } |
526 | } |
693 | } |
527 | |
694 | |
|
|
695 | static void ecb_cold |
528 | static void etp_set_max_poll_time (double nseconds) |
696 | etp_set_max_poll_time (double nseconds) |
529 | { |
697 | { |
530 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
698 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
531 | max_poll_time = nseconds; |
699 | max_poll_time = nseconds * EIO_TICKS; |
532 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
700 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
533 | } |
701 | } |
534 | |
702 | |
|
|
703 | static void ecb_cold |
535 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
704 | etp_set_max_poll_reqs (unsigned int maxreqs) |
536 | { |
705 | { |
537 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
706 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
538 | max_poll_reqs = maxreqs; |
707 | max_poll_reqs = maxreqs; |
539 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
708 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
540 | } |
709 | } |
541 | |
710 | |
|
|
711 | static void ecb_cold |
542 | static void etp_set_max_idle (unsigned int nthreads) |
712 | etp_set_max_idle (unsigned int nthreads) |
543 | { |
713 | { |
544 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
714 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
545 | max_idle = nthreads <= 0 ? 1 : nthreads; |
715 | max_idle = nthreads; |
546 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
716 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
547 | } |
717 | } |
548 | |
718 | |
|
|
719 | static void ecb_cold |
|
|
720 | etp_set_idle_timeout (unsigned int seconds) |
|
|
721 | { |
|
|
722 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
723 | idle_timeout = seconds; |
|
|
724 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
725 | } |
|
|
726 | |
|
|
727 | static void ecb_cold |
549 | static void etp_set_min_parallel (unsigned int nthreads) |
728 | etp_set_min_parallel (unsigned int nthreads) |
550 | { |
729 | { |
551 | if (wanted < nthreads) |
730 | if (wanted < nthreads) |
552 | wanted = nthreads; |
731 | wanted = nthreads; |
553 | } |
732 | } |
554 | |
733 | |
|
|
734 | static void ecb_cold |
555 | static void etp_set_max_parallel (unsigned int nthreads) |
735 | etp_set_max_parallel (unsigned int nthreads) |
556 | { |
736 | { |
557 | if (wanted > nthreads) |
737 | if (wanted > nthreads) |
558 | wanted = nthreads; |
738 | wanted = nthreads; |
559 | |
739 | |
560 | while (started > wanted) |
740 | while (started > wanted) |
561 | etp_end_thread (); |
741 | etp_end_thread (); |
562 | } |
742 | } |
563 | |
743 | |
564 | /*****************************************************************************/ |
744 | /*****************************************************************************/ |
565 | |
745 | |
|
|
746 | static void |
566 | static void grp_try_feed (eio_req *grp) |
747 | grp_try_feed (eio_req *grp) |
567 | { |
748 | { |
568 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
749 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
569 | { |
750 | { |
570 | int old_len = grp->size; |
751 | grp->flags &= ~EIO_FLAG_GROUPADD; |
571 | |
752 | |
572 | EIO_FEED (grp); |
753 | EIO_FEED (grp); |
573 | |
754 | |
574 | /* stop if no progress has been made */ |
755 | /* stop if no progress has been made */ |
575 | if (old_len == grp->size) |
756 | if (!(grp->flags & EIO_FLAG_GROUPADD)) |
576 | { |
757 | { |
577 | grp->feed = 0; |
758 | grp->feed = 0; |
578 | break; |
759 | break; |
579 | } |
760 | } |
580 | } |
761 | } |
581 | } |
762 | } |
582 | |
763 | |
|
|
764 | static int |
583 | static int grp_dec (eio_req *grp) |
765 | grp_dec (eio_req *grp) |
584 | { |
766 | { |
585 | --grp->size; |
767 | --grp->size; |
586 | |
768 | |
587 | /* call feeder, if applicable */ |
769 | /* call feeder, if applicable */ |
588 | grp_try_feed (grp); |
770 | grp_try_feed (grp); |
… | |
… | |
592 | return eio_finish (grp); |
774 | return eio_finish (grp); |
593 | else |
775 | else |
594 | return 0; |
776 | return 0; |
595 | } |
777 | } |
596 | |
778 | |
|
|
779 | static void |
597 | void eio_destroy (eio_req *req) |
780 | eio_destroy (eio_req *req) |
598 | { |
781 | { |
599 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
782 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
600 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
783 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
601 | |
784 | |
602 | EIO_DESTROY (req); |
785 | EIO_DESTROY (req); |
603 | } |
786 | } |
604 | |
787 | |
|
|
788 | static int |
605 | static int eio_finish (eio_req *req) |
789 | eio_finish (eio_req *req) |
606 | { |
790 | { |
607 | int res = EIO_FINISH (req); |
791 | int res = EIO_FINISH (req); |
608 | |
792 | |
609 | if (req->grp) |
793 | if (req->grp) |
610 | { |
794 | { |
… | |
… | |
618 | if (grp->grp_first == req) |
802 | if (grp->grp_first == req) |
619 | grp->grp_first = req->grp_next; |
803 | grp->grp_first = req->grp_next; |
620 | |
804 | |
621 | res2 = grp_dec (grp); |
805 | res2 = grp_dec (grp); |
622 | |
806 | |
623 | if (!res && res2) |
807 | if (!res) |
624 | res = res2; |
808 | res = res2; |
625 | } |
809 | } |
626 | |
810 | |
627 | eio_destroy (req); |
811 | eio_destroy (req); |
628 | |
812 | |
629 | return res; |
813 | return res; |
630 | } |
814 | } |
631 | |
815 | |
|
|
816 | void |
632 | void eio_grp_cancel (eio_req *grp) |
817 | eio_grp_cancel (eio_req *grp) |
633 | { |
818 | { |
634 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
819 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
635 | eio_cancel (grp); |
820 | eio_cancel (grp); |
636 | } |
821 | } |
637 | |
822 | |
|
|
823 | void |
638 | void eio_cancel (eio_req *req) |
824 | eio_cancel (eio_req *req) |
639 | { |
825 | { |
640 | etp_cancel (req); |
826 | etp_cancel (req); |
641 | } |
827 | } |
642 | |
828 | |
|
|
829 | void |
643 | void eio_submit (eio_req *req) |
830 | eio_submit (eio_req *req) |
644 | { |
831 | { |
645 | etp_submit (req); |
832 | etp_submit (req); |
646 | } |
833 | } |
647 | |
834 | |
648 | unsigned int eio_nreqs (void) |
835 | unsigned int |
|
|
836 | eio_nreqs (void) |
649 | { |
837 | { |
650 | return etp_nreqs (); |
838 | return etp_nreqs (); |
651 | } |
839 | } |
652 | |
840 | |
653 | unsigned int eio_nready (void) |
841 | unsigned int |
|
|
842 | eio_nready (void) |
654 | { |
843 | { |
655 | return etp_nready (); |
844 | return etp_nready (); |
656 | } |
845 | } |
657 | |
846 | |
658 | unsigned int eio_npending (void) |
847 | unsigned int |
|
|
848 | eio_npending (void) |
659 | { |
849 | { |
660 | return etp_npending (); |
850 | return etp_npending (); |
661 | } |
851 | } |
662 | |
852 | |
663 | unsigned int eio_nthreads (void) |
853 | unsigned int ecb_cold |
|
|
854 | eio_nthreads (void) |
664 | { |
855 | { |
665 | return etp_nthreads (); |
856 | return etp_nthreads (); |
666 | } |
857 | } |
667 | |
858 | |
|
|
859 | void ecb_cold |
668 | void eio_set_max_poll_time (double nseconds) |
860 | eio_set_max_poll_time (double nseconds) |
669 | { |
861 | { |
670 | etp_set_max_poll_time (nseconds); |
862 | etp_set_max_poll_time (nseconds); |
671 | } |
863 | } |
672 | |
864 | |
|
|
865 | void ecb_cold |
673 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
866 | eio_set_max_poll_reqs (unsigned int maxreqs) |
674 | { |
867 | { |
675 | etp_set_max_poll_reqs (maxreqs); |
868 | etp_set_max_poll_reqs (maxreqs); |
676 | } |
869 | } |
677 | |
870 | |
|
|
871 | void ecb_cold |
678 | void eio_set_max_idle (unsigned int nthreads) |
872 | eio_set_max_idle (unsigned int nthreads) |
679 | { |
873 | { |
680 | etp_set_max_idle (nthreads); |
874 | etp_set_max_idle (nthreads); |
681 | } |
875 | } |
682 | |
876 | |
|
|
877 | void ecb_cold |
|
|
878 | eio_set_idle_timeout (unsigned int seconds) |
|
|
879 | { |
|
|
880 | etp_set_idle_timeout (seconds); |
|
|
881 | } |
|
|
882 | |
|
|
883 | void ecb_cold |
683 | void eio_set_min_parallel (unsigned int nthreads) |
884 | eio_set_min_parallel (unsigned int nthreads) |
684 | { |
885 | { |
685 | etp_set_min_parallel (nthreads); |
886 | etp_set_min_parallel (nthreads); |
686 | } |
887 | } |
687 | |
888 | |
|
|
889 | void ecb_cold |
688 | void eio_set_max_parallel (unsigned int nthreads) |
890 | eio_set_max_parallel (unsigned int nthreads) |
689 | { |
891 | { |
690 | etp_set_max_parallel (nthreads); |
892 | etp_set_max_parallel (nthreads); |
691 | } |
893 | } |
692 | |
894 | |
693 | int eio_poll (void) |
895 | int eio_poll (void) |
… | |
… | |
697 | |
899 | |
698 | /*****************************************************************************/ |
900 | /*****************************************************************************/ |
699 | /* work around various missing functions */ |
901 | /* work around various missing functions */ |
700 | |
902 | |
701 | #if !HAVE_PREADWRITE |
903 | #if !HAVE_PREADWRITE |
|
|
904 | # undef pread |
|
|
905 | # undef pwrite |
702 | # define pread eio__pread |
906 | # define pread eio__pread |
703 | # define pwrite eio__pwrite |
907 | # define pwrite eio__pwrite |
704 | |
908 | |
705 | /* |
|
|
706 | * make our pread/pwrite safe against themselves, but not against |
|
|
707 | * normal read/write by using a mutex. slows down execution a lot, |
|
|
708 | * but that's your problem, not mine. |
|
|
709 | */ |
|
|
710 | static mutex_t preadwritelock = X_MUTEX_INIT; |
|
|
711 | |
|
|
712 | static ssize_t |
909 | static eio_ssize_t |
713 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
910 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
714 | { |
911 | { |
715 | ssize_t res; |
912 | eio_ssize_t res; |
716 | off_t ooffset; |
913 | off_t ooffset; |
717 | |
914 | |
718 | X_LOCK (preadwritelock); |
915 | X_LOCK (preadwritelock); |
719 | ooffset = lseek (fd, 0, SEEK_CUR); |
916 | ooffset = lseek (fd, 0, SEEK_CUR); |
720 | lseek (fd, offset, SEEK_SET); |
917 | lseek (fd, offset, SEEK_SET); |
… | |
… | |
723 | X_UNLOCK (preadwritelock); |
920 | X_UNLOCK (preadwritelock); |
724 | |
921 | |
725 | return res; |
922 | return res; |
726 | } |
923 | } |
727 | |
924 | |
728 | static ssize_t |
925 | static eio_ssize_t |
729 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
926 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
730 | { |
927 | { |
731 | ssize_t res; |
928 | eio_ssize_t res; |
732 | off_t ooffset; |
929 | off_t ooffset; |
733 | |
930 | |
734 | X_LOCK (preadwritelock); |
931 | X_LOCK (preadwritelock); |
735 | ooffset = lseek (fd, 0, SEEK_CUR); |
932 | ooffset = lseek (fd, 0, SEEK_CUR); |
736 | lseek (fd, offset, SEEK_SET); |
933 | lseek (fd, offset, SEEK_SET); |
737 | res = write (fd, buf, count); |
934 | res = write (fd, buf, count); |
738 | lseek (fd, offset, SEEK_SET); |
935 | lseek (fd, ooffset, SEEK_SET); |
739 | X_UNLOCK (preadwritelock); |
936 | X_UNLOCK (preadwritelock); |
740 | |
937 | |
741 | return res; |
938 | return res; |
742 | } |
939 | } |
743 | #endif |
940 | #endif |
744 | |
941 | |
745 | #ifndef HAVE_FUTIMES |
942 | #ifndef HAVE_UTIMES |
746 | |
943 | |
|
|
944 | # undef utimes |
747 | # define utimes(path,times) eio__utimes (path, times) |
945 | # define utimes(path,times) eio__utimes (path, times) |
748 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
749 | |
946 | |
750 | static int |
947 | static int |
751 | eio__utimes (const char *filename, const struct timeval times[2]) |
948 | eio__utimes (const char *filename, const struct timeval times[2]) |
752 | { |
949 | { |
753 | if (times) |
950 | if (times) |
… | |
… | |
761 | } |
958 | } |
762 | else |
959 | else |
763 | return utime (filename, 0); |
960 | return utime (filename, 0); |
764 | } |
961 | } |
765 | |
962 | |
|
|
963 | #endif |
|
|
964 | |
|
|
965 | #ifndef HAVE_FUTIMES |
|
|
966 | |
|
|
967 | # undef futimes |
|
|
968 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
969 | |
|
|
970 | static int |
766 | static int eio__futimes (int fd, const struct timeval tv[2]) |
971 | eio__futimes (int fd, const struct timeval tv[2]) |
767 | { |
972 | { |
768 | errno = ENOSYS; |
973 | errno = ENOSYS; |
769 | return -1; |
974 | return -1; |
770 | } |
975 | } |
771 | |
976 | |
772 | #endif |
977 | #endif |
773 | |
978 | |
774 | #if !HAVE_FDATASYNC |
979 | #if !HAVE_FDATASYNC |
|
|
980 | # undef fdatasync |
775 | # define fdatasync fsync |
981 | # define fdatasync(fd) fsync (fd) |
776 | #endif |
982 | #endif |
|
|
983 | |
|
|
984 | static int |
|
|
985 | eio__syncfs (int fd) |
|
|
986 | { |
|
|
987 | int res; |
|
|
988 | |
|
|
989 | #if HAVE_SYS_SYNCFS |
|
|
990 | res = (int)syscall (__NR_syncfs, (int)(fd)); |
|
|
991 | #else |
|
|
992 | res = -1; |
|
|
993 | errno = ENOSYS; |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | if (res < 0 && errno == ENOSYS && fd >= 0) |
|
|
997 | sync (); |
|
|
998 | |
|
|
999 | return res; |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | /* sync_file_range always needs emulation */ |
|
|
1003 | static int |
|
|
1004 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
|
|
1005 | { |
|
|
1006 | #if HAVE_SYNC_FILE_RANGE |
|
|
1007 | int res; |
|
|
1008 | |
|
|
1009 | if (EIO_SYNC_FILE_RANGE_WAIT_BEFORE != SYNC_FILE_RANGE_WAIT_BEFORE |
|
|
1010 | || EIO_SYNC_FILE_RANGE_WRITE != SYNC_FILE_RANGE_WRITE |
|
|
1011 | || EIO_SYNC_FILE_RANGE_WAIT_AFTER != SYNC_FILE_RANGE_WAIT_AFTER) |
|
|
1012 | { |
|
|
1013 | flags = 0 |
|
|
1014 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_BEFORE ? SYNC_FILE_RANGE_WAIT_BEFORE : 0) |
|
|
1015 | | (flags & EIO_SYNC_FILE_RANGE_WRITE ? SYNC_FILE_RANGE_WRITE : 0) |
|
|
1016 | | (flags & EIO_SYNC_FILE_RANGE_WAIT_AFTER ? SYNC_FILE_RANGE_WAIT_AFTER : 0); |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | res = sync_file_range (fd, offset, nbytes, flags); |
|
|
1020 | |
|
|
1021 | if (!res || errno != ENOSYS) |
|
|
1022 | return res; |
|
|
1023 | #endif |
|
|
1024 | |
|
|
1025 | /* even though we could play tricks with the flags, it's better to always |
|
|
1026 | * call fdatasync, as that matches the expectation of its users best */ |
|
|
1027 | return fdatasync (fd); |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | static int |
|
|
1031 | eio__fallocate (int fd, int mode, off_t offset, size_t len) |
|
|
1032 | { |
|
|
1033 | #if HAVE_FALLOCATE |
|
|
1034 | return fallocate (fd, mode, offset, len); |
|
|
1035 | #else |
|
|
1036 | errno = ENOSYS; |
|
|
1037 | return -1; |
|
|
1038 | #endif |
|
|
1039 | } |
777 | |
1040 | |
778 | #if !HAVE_READAHEAD |
1041 | #if !HAVE_READAHEAD |
|
|
1042 | # undef readahead |
779 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
1043 | # define readahead(fd,offset,count) eio__readahead (fd, offset, count, self) |
780 | |
1044 | |
781 | static ssize_t |
1045 | static eio_ssize_t |
782 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
1046 | eio__readahead (int fd, off_t offset, size_t count, etp_worker *self) |
783 | { |
1047 | { |
784 | size_t todo = count; |
1048 | size_t todo = count; |
785 | dBUF; |
1049 | dBUF; |
786 | |
1050 | |
… | |
… | |
791 | pread (fd, eio_buf, len, offset); |
1055 | pread (fd, eio_buf, len, offset); |
792 | offset += len; |
1056 | offset += len; |
793 | todo -= len; |
1057 | todo -= len; |
794 | } |
1058 | } |
795 | |
1059 | |
|
|
1060 | FUBd; |
|
|
1061 | |
796 | errno = 0; |
1062 | errno = 0; |
797 | return count; |
1063 | return count; |
798 | } |
1064 | } |
799 | |
1065 | |
800 | #endif |
1066 | #endif |
801 | |
1067 | |
802 | /* sendfile always needs emulation */ |
1068 | /* sendfile always needs emulation */ |
803 | static ssize_t |
1069 | static eio_ssize_t |
804 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
1070 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count) |
805 | { |
1071 | { |
|
|
1072 | eio_ssize_t written = 0; |
806 | ssize_t res; |
1073 | eio_ssize_t res; |
807 | |
1074 | |
808 | if (!count) |
1075 | if (!count) |
809 | return 0; |
1076 | return 0; |
810 | |
1077 | |
|
|
1078 | for (;;) |
|
|
1079 | { |
|
|
1080 | #ifdef __APPLE__ |
|
|
1081 | # undef HAVE_SENDFILE /* broken, as everything on os x */ |
|
|
1082 | #endif |
811 | #if HAVE_SENDFILE |
1083 | #if HAVE_SENDFILE |
812 | # if __linux |
1084 | # if __linux |
|
|
1085 | off_t soffset = offset; |
813 | res = sendfile (ofd, ifd, &offset, count); |
1086 | res = sendfile (ofd, ifd, &soffset, count); |
814 | |
1087 | |
815 | # elif __freebsd |
1088 | # elif __FreeBSD__ |
816 | /* |
1089 | /* |
817 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
1090 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
818 | * wasted on making it similar to other I/O functions. |
1091 | * wasted on making it similar to other I/O functions. |
819 | */ |
1092 | */ |
820 | { |
|
|
821 | off_t sbytes; |
1093 | off_t sbytes; |
822 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
1094 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
823 | |
1095 | |
824 | if (res < 0 && sbytes) |
1096 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
825 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1097 | /* freebsd' sendfile will return 0 on success */ |
|
|
1098 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1099 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1100 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
826 | res = sbytes; |
1101 | res = sbytes; |
827 | } |
1102 | #endif |
|
|
1103 | |
|
|
1104 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1105 | if (sbytes) |
|
|
1106 | res = sbytes; |
|
|
1107 | |
|
|
1108 | # elif defined (__APPLE__) |
|
|
1109 | off_t sbytes = count; |
|
|
1110 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1111 | |
|
|
1112 | /* according to the manpage, sbytes is always valid */ |
|
|
1113 | if (sbytes) |
|
|
1114 | res = sbytes; |
828 | |
1115 | |
829 | # elif __hpux |
1116 | # elif __hpux |
830 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1117 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
831 | |
1118 | |
832 | # elif __solaris |
1119 | # elif __solaris |
833 | { |
|
|
834 | struct sendfilevec vec; |
1120 | struct sendfilevec vec; |
835 | size_t sbytes; |
1121 | size_t sbytes; |
836 | |
1122 | |
837 | vec.sfv_fd = ifd; |
1123 | vec.sfv_fd = ifd; |
838 | vec.sfv_flag = 0; |
1124 | vec.sfv_flag = 0; |
839 | vec.sfv_off = offset; |
1125 | vec.sfv_off = offset; |
840 | vec.sfv_len = count; |
1126 | vec.sfv_len = count; |
841 | |
1127 | |
842 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1128 | res = sendfilev (ofd, &vec, 1, &sbytes); |
843 | |
1129 | |
844 | if (res < 0 && sbytes) |
1130 | if (res < 0 && sbytes) |
845 | res = sbytes; |
1131 | res = sbytes; |
846 | } |
|
|
847 | |
1132 | |
848 | # endif |
1133 | # endif |
|
|
1134 | |
|
|
1135 | #elif defined (_WIN32) && 0 |
|
|
1136 | /* does not work, just for documentation of what would need to be done */ |
|
|
1137 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1138 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1139 | /* has no way to get an independent handle to the same file description */ |
|
|
1140 | HANDLE h = TO_SOCKET (ifd); |
|
|
1141 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1142 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1143 | |
849 | #else |
1144 | #else |
850 | res = -1; |
1145 | res = -1; |
851 | errno = ENOSYS; |
1146 | errno = ENOSYS; |
852 | #endif |
1147 | #endif |
853 | |
1148 | |
|
|
1149 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1150 | if (res <= 128 * 1024 * 1024) |
|
|
1151 | { |
|
|
1152 | if (res > 0) |
|
|
1153 | written += res; |
|
|
1154 | |
|
|
1155 | if (written) |
|
|
1156 | return written; |
|
|
1157 | |
|
|
1158 | break; |
|
|
1159 | } |
|
|
1160 | else |
|
|
1161 | { |
|
|
1162 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1163 | written += res; |
|
|
1164 | offset += res; |
|
|
1165 | count -= res; |
|
|
1166 | |
|
|
1167 | if (!count) |
|
|
1168 | return written; |
|
|
1169 | } |
|
|
1170 | } |
|
|
1171 | |
854 | if (res < 0 |
1172 | if (res < 0 |
855 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1173 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1174 | /* BSDs */ |
|
|
1175 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1176 | || errno == ENOTSUP |
|
|
1177 | #endif |
|
|
1178 | #ifdef EOPNOTSUPP /* windows */ |
|
|
1179 | || errno == EOPNOTSUPP /* BSDs */ |
|
|
1180 | #endif |
856 | #if __solaris |
1181 | #if __solaris |
857 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1182 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
858 | #endif |
1183 | #endif |
859 | ) |
1184 | ) |
860 | ) |
1185 | ) |
… | |
… | |
864 | |
1189 | |
865 | res = 0; |
1190 | res = 0; |
866 | |
1191 | |
867 | while (count) |
1192 | while (count) |
868 | { |
1193 | { |
869 | ssize_t cnt; |
1194 | eio_ssize_t cnt; |
870 | |
1195 | |
871 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
1196 | cnt = pread (ifd, eio_buf, count > EIO_BUFSIZE ? EIO_BUFSIZE : count, offset); |
872 | |
1197 | |
873 | if (cnt <= 0) |
1198 | if (cnt <= 0) |
874 | { |
1199 | { |
… | |
… | |
886 | |
1211 | |
887 | offset += cnt; |
1212 | offset += cnt; |
888 | res += cnt; |
1213 | res += cnt; |
889 | count -= cnt; |
1214 | count -= cnt; |
890 | } |
1215 | } |
|
|
1216 | |
|
|
1217 | FUBd; |
891 | } |
1218 | } |
892 | |
1219 | |
893 | return res; |
1220 | return res; |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | #ifdef PAGESIZE |
|
|
1224 | # define eio_pagesize() PAGESIZE |
|
|
1225 | #else |
|
|
1226 | static intptr_t |
|
|
1227 | eio_pagesize (void) |
|
|
1228 | { |
|
|
1229 | static intptr_t page; |
|
|
1230 | |
|
|
1231 | if (!page) |
|
|
1232 | page = sysconf (_SC_PAGESIZE); |
|
|
1233 | |
|
|
1234 | return page; |
|
|
1235 | } |
|
|
1236 | #endif |
|
|
1237 | |
|
|
1238 | static void |
|
|
1239 | eio_page_align (void **addr, size_t *length) |
|
|
1240 | { |
|
|
1241 | intptr_t mask = eio_pagesize () - 1; |
|
|
1242 | |
|
|
1243 | /* round down addr */ |
|
|
1244 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1245 | |
|
|
1246 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1247 | *length += adj; |
|
|
1248 | |
|
|
1249 | /* round up length */ |
|
|
1250 | *length = (*length + mask) & ~mask; |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | #if !_POSIX_MEMLOCK |
|
|
1254 | # define eio__mlockall(a) EIO_ENOSYS () |
|
|
1255 | #else |
|
|
1256 | |
|
|
1257 | static int |
|
|
1258 | eio__mlockall (int flags) |
|
|
1259 | { |
|
|
1260 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1261 | extern int mallopt (int, int); |
|
|
1262 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
|
|
1263 | #endif |
|
|
1264 | |
|
|
1265 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1266 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1267 | { |
|
|
1268 | flags = 0 |
|
|
1269 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1270 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1271 | } |
|
|
1272 | |
|
|
1273 | return mlockall (flags); |
|
|
1274 | } |
|
|
1275 | #endif |
|
|
1276 | |
|
|
1277 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1278 | # define eio__mlock(a,b) EIO_ENOSYS () |
|
|
1279 | #else |
|
|
1280 | |
|
|
1281 | static int |
|
|
1282 | eio__mlock (void *addr, size_t length) |
|
|
1283 | { |
|
|
1284 | eio_page_align (&addr, &length); |
|
|
1285 | |
|
|
1286 | return mlock (addr, length); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | #endif |
|
|
1290 | |
|
|
1291 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1292 | # define eio__msync(a,b,c) EIO_ENOSYS () |
|
|
1293 | #else |
|
|
1294 | |
|
|
1295 | static int |
|
|
1296 | eio__msync (void *mem, size_t len, int flags) |
|
|
1297 | { |
|
|
1298 | eio_page_align (&mem, &len); |
|
|
1299 | |
|
|
1300 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1301 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1302 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1303 | { |
|
|
1304 | flags = 0 |
|
|
1305 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1306 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1307 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1308 | } |
|
|
1309 | |
|
|
1310 | return msync (mem, len, flags); |
|
|
1311 | } |
|
|
1312 | |
|
|
1313 | #endif |
|
|
1314 | |
|
|
1315 | static int |
|
|
1316 | eio__mtouch (eio_req *req) |
|
|
1317 | { |
|
|
1318 | void *mem = req->ptr2; |
|
|
1319 | size_t len = req->size; |
|
|
1320 | int flags = req->int1; |
|
|
1321 | |
|
|
1322 | eio_page_align (&mem, &len); |
|
|
1323 | |
|
|
1324 | { |
|
|
1325 | intptr_t addr = (intptr_t)mem; |
|
|
1326 | intptr_t end = addr + len; |
|
|
1327 | intptr_t page = eio_pagesize (); |
|
|
1328 | |
|
|
1329 | if (addr < end) |
|
|
1330 | if (flags & EIO_MT_MODIFY) /* modify */ |
|
|
1331 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1332 | else |
|
|
1333 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1334 | } |
|
|
1335 | |
|
|
1336 | return 0; |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | /*****************************************************************************/ |
|
|
1340 | /* requests implemented outside eio_execute, because they are so large */ |
|
|
1341 | |
|
|
1342 | static void |
|
|
1343 | eio__realpath (eio_req *req, etp_worker *self) |
|
|
1344 | { |
|
|
1345 | char *rel = req->ptr1; |
|
|
1346 | char *res; |
|
|
1347 | char *tmp1, *tmp2; |
|
|
1348 | #if SYMLOOP_MAX > 32 |
|
|
1349 | int symlinks = SYMLOOP_MAX; |
|
|
1350 | #else |
|
|
1351 | int symlinks = 32; |
|
|
1352 | #endif |
|
|
1353 | |
|
|
1354 | req->result = -1; |
|
|
1355 | |
|
|
1356 | errno = EINVAL; |
|
|
1357 | if (!rel) |
|
|
1358 | return; |
|
|
1359 | |
|
|
1360 | errno = ENOENT; |
|
|
1361 | if (!*rel) |
|
|
1362 | return; |
|
|
1363 | |
|
|
1364 | if (!req->ptr2) |
|
|
1365 | { |
|
|
1366 | X_LOCK (wrklock); |
|
|
1367 | req->flags |= EIO_FLAG_PTR2_FREE; |
|
|
1368 | X_UNLOCK (wrklock); |
|
|
1369 | req->ptr2 = malloc (PATH_MAX * 3); |
|
|
1370 | |
|
|
1371 | errno = ENOMEM; |
|
|
1372 | if (!req->ptr2) |
|
|
1373 | return; |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | res = req->ptr2; |
|
|
1377 | tmp1 = res + PATH_MAX; |
|
|
1378 | tmp2 = tmp1 + PATH_MAX; |
|
|
1379 | |
|
|
1380 | #if 0 /* disabled, the musl way to do things is just too racy */ |
|
|
1381 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
|
|
1382 | /* on linux we may be able to ask the kernel */ |
|
|
1383 | { |
|
|
1384 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
|
|
1385 | |
|
|
1386 | if (fd >= 0) |
|
|
1387 | { |
|
|
1388 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
|
|
1389 | req->result = readlink (tmp1, res, PATH_MAX); |
|
|
1390 | close (fd); |
|
|
1391 | |
|
|
1392 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
|
|
1393 | |
|
|
1394 | if (req->result > 0) |
|
|
1395 | goto done; |
|
|
1396 | } |
|
|
1397 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
|
|
1398 | return; |
|
|
1399 | } |
|
|
1400 | #endif |
|
|
1401 | #endif |
|
|
1402 | |
|
|
1403 | if (*rel != '/') |
|
|
1404 | { |
|
|
1405 | if (!getcwd (res, PATH_MAX)) |
|
|
1406 | return; |
|
|
1407 | |
|
|
1408 | if (res [1]) /* only use if not / */ |
|
|
1409 | res += strlen (res); |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | while (*rel) |
|
|
1413 | { |
|
|
1414 | eio_ssize_t len, linklen; |
|
|
1415 | char *beg = rel; |
|
|
1416 | |
|
|
1417 | while (*rel && *rel != '/') |
|
|
1418 | ++rel; |
|
|
1419 | |
|
|
1420 | len = rel - beg; |
|
|
1421 | |
|
|
1422 | if (!len) /* skip slashes */ |
|
|
1423 | { |
|
|
1424 | ++rel; |
|
|
1425 | continue; |
|
|
1426 | } |
|
|
1427 | |
|
|
1428 | if (beg [0] == '.') |
|
|
1429 | { |
|
|
1430 | if (len == 1) |
|
|
1431 | continue; /* . - nop */ |
|
|
1432 | |
|
|
1433 | if (beg [1] == '.' && len == 2) |
|
|
1434 | { |
|
|
1435 | /* .. - back up one component, if possible */ |
|
|
1436 | |
|
|
1437 | while (res != req->ptr2) |
|
|
1438 | if (*--res == '/') |
|
|
1439 | break; |
|
|
1440 | |
|
|
1441 | continue; |
|
|
1442 | } |
|
|
1443 | } |
|
|
1444 | |
|
|
1445 | errno = ENAMETOOLONG; |
|
|
1446 | if (res + 1 + len + 1 >= tmp1) |
|
|
1447 | return; |
|
|
1448 | |
|
|
1449 | /* copy one component */ |
|
|
1450 | *res = '/'; |
|
|
1451 | memcpy (res + 1, beg, len); |
|
|
1452 | |
|
|
1453 | /* zero-terminate, for readlink */ |
|
|
1454 | res [len + 1] = 0; |
|
|
1455 | |
|
|
1456 | /* now check if it's a symlink */ |
|
|
1457 | linklen = readlink (req->ptr2, tmp1, PATH_MAX); |
|
|
1458 | |
|
|
1459 | if (linklen < 0) |
|
|
1460 | { |
|
|
1461 | if (errno != EINVAL) |
|
|
1462 | return; |
|
|
1463 | |
|
|
1464 | /* it's a normal directory. hopefully */ |
|
|
1465 | res += len + 1; |
|
|
1466 | } |
|
|
1467 | else |
|
|
1468 | { |
|
|
1469 | /* yay, it was a symlink - build new path in tmp2 */ |
|
|
1470 | int rellen = strlen (rel); |
|
|
1471 | |
|
|
1472 | errno = ENAMETOOLONG; |
|
|
1473 | if (linklen + 1 + rellen >= PATH_MAX) |
|
|
1474 | return; |
|
|
1475 | |
|
|
1476 | errno = ELOOP; |
|
|
1477 | if (!--symlinks) |
|
|
1478 | return; |
|
|
1479 | |
|
|
1480 | if (*tmp1 == '/') |
|
|
1481 | res = req->ptr2; /* symlink resolves to an absolute path */ |
|
|
1482 | |
|
|
1483 | /* we need to be careful, as rel might point into tmp2 already */ |
|
|
1484 | memmove (tmp2 + linklen + 1, rel, rellen + 1); |
|
|
1485 | tmp2 [linklen] = '/'; |
|
|
1486 | memcpy (tmp2, tmp1, linklen); |
|
|
1487 | |
|
|
1488 | rel = tmp2; |
|
|
1489 | } |
|
|
1490 | } |
|
|
1491 | |
|
|
1492 | /* special case for the lone root path */ |
|
|
1493 | if (res == req->ptr2) |
|
|
1494 | *res++ = '/'; |
|
|
1495 | |
|
|
1496 | req->result = res - (char *)req->ptr2; |
|
|
1497 | |
|
|
1498 | done: |
|
|
1499 | req->ptr2 = realloc (req->ptr2, req->result); /* trade time for space savings */ |
|
|
1500 | } |
|
|
1501 | |
|
|
1502 | static signed char |
|
|
1503 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1504 | { |
|
|
1505 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1506 | : a->inode < b->inode ? -1 |
|
|
1507 | : a->inode > b->inode ? 1 |
|
|
1508 | : 0; |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1512 | |
|
|
1513 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1514 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1515 | |
|
|
1516 | static void |
|
|
1517 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1518 | { |
|
|
1519 | unsigned char bits [9 + sizeof (eio_ino_t) * 8]; |
|
|
1520 | unsigned char *bit = bits; |
|
|
1521 | |
|
|
1522 | assert (CHAR_BIT == 8); |
|
|
1523 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1524 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1525 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1526 | |
|
|
1527 | if (size <= EIO_SORT_FAST) |
|
|
1528 | return; |
|
|
1529 | |
|
|
1530 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1531 | /* try to take endianness into account, as well as differences in eio_ino_t sizes */ |
|
|
1532 | /* inode_bits must contain all inodes ORed together */ |
|
|
1533 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1534 | { |
|
|
1535 | eio_ino_t endianness; |
|
|
1536 | int i, j; |
|
|
1537 | |
|
|
1538 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1539 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1540 | ((unsigned char *)&endianness)[i] = i; |
|
|
1541 | |
|
|
1542 | *bit++ = 0; |
|
|
1543 | |
|
|
1544 | for (i = 0; i < sizeof (eio_ino_t); ++i) |
|
|
1545 | { |
|
|
1546 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1547 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1548 | endianness >>= 8; |
|
|
1549 | |
|
|
1550 | for (j = 0; j < 8; ++j) |
|
|
1551 | if (inode_bits & (((eio_ino_t)1) << (i * 8 + j))) |
|
|
1552 | *bit++ = offs + j; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | for (j = 0; j < 8; ++j) |
|
|
1556 | if (score_bits & (1 << j)) |
|
|
1557 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1561 | { |
|
|
1562 | eio_dirent *base_stk [9 + sizeof (eio_ino_t) * 8], *base; |
|
|
1563 | eio_dirent *end_stk [9 + sizeof (eio_ino_t) * 8], *end; |
|
|
1564 | unsigned char *bit_stk [9 + sizeof (eio_ino_t) * 8]; |
|
|
1565 | int stk_idx = 0; |
|
|
1566 | |
|
|
1567 | base_stk [stk_idx] = dents; |
|
|
1568 | end_stk [stk_idx] = dents + size; |
|
|
1569 | bit_stk [stk_idx] = bit - 1; |
|
|
1570 | |
|
|
1571 | do |
|
|
1572 | { |
|
|
1573 | base = base_stk [stk_idx]; |
|
|
1574 | end = end_stk [stk_idx]; |
|
|
1575 | bit = bit_stk [stk_idx]; |
|
|
1576 | |
|
|
1577 | for (;;) |
|
|
1578 | { |
|
|
1579 | unsigned char O = *bit >> 3; |
|
|
1580 | unsigned char M = 1 << (*bit & 7); |
|
|
1581 | |
|
|
1582 | eio_dirent *a = base; |
|
|
1583 | eio_dirent *b = end; |
|
|
1584 | |
|
|
1585 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1586 | break; |
|
|
1587 | |
|
|
1588 | /* now bit-partition the array on the bit */ |
|
|
1589 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1590 | /* partition algos found in the literature */ |
|
|
1591 | do |
|
|
1592 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1593 | ++a; |
|
|
1594 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1595 | { |
|
|
1596 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1597 | ++a; |
|
|
1598 | } |
|
|
1599 | while (b > a); |
|
|
1600 | |
|
|
1601 | /* next bit, or stop, if no bits left in this path */ |
|
|
1602 | if (!*--bit) |
|
|
1603 | break; |
|
|
1604 | |
|
|
1605 | base_stk [stk_idx] = a; |
|
|
1606 | end_stk [stk_idx] = end; |
|
|
1607 | bit_stk [stk_idx] = bit; |
|
|
1608 | ++stk_idx; |
|
|
1609 | |
|
|
1610 | end = a; |
|
|
1611 | } |
|
|
1612 | } |
|
|
1613 | while (stk_idx--); |
|
|
1614 | } |
|
|
1615 | } |
|
|
1616 | |
|
|
1617 | static void |
|
|
1618 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1619 | { |
|
|
1620 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1621 | { |
|
|
1622 | int i; |
|
|
1623 | eio_dirent *min = dents; |
|
|
1624 | |
|
|
1625 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1626 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1627 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1628 | min = &dents [i]; |
|
|
1629 | |
|
|
1630 | /* swap elements 0 and j (minimum) */ |
|
|
1631 | { |
|
|
1632 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1633 | } |
|
|
1634 | } |
|
|
1635 | |
|
|
1636 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1637 | { |
|
|
1638 | eio_dirent *i, *j; |
|
|
1639 | |
|
|
1640 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1641 | { |
|
|
1642 | eio_dirent value = *i; |
|
|
1643 | |
|
|
1644 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1645 | j [1] = j [0]; |
|
|
1646 | |
|
|
1647 | j [1] = value; |
|
|
1648 | } |
|
|
1649 | } |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | static void |
|
|
1653 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, eio_ino_t inode_bits) |
|
|
1654 | { |
|
|
1655 | if (size <= 1) |
|
|
1656 | return; /* our insertion sort relies on size > 0 */ |
|
|
1657 | |
|
|
1658 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1659 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1660 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1661 | |
|
|
1662 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1663 | /* as insertion sort is more efficient for small partitions */ |
|
|
1664 | eio_dent_insertion_sort (dents, size); |
894 | } |
1665 | } |
895 | |
1666 | |
896 | /* read a full directory */ |
1667 | /* read a full directory */ |
897 | static void |
1668 | static void |
898 | eio__scandir (eio_req *req, etp_worker *self) |
1669 | eio__scandir (eio_req *req, etp_worker *self) |
899 | { |
1670 | { |
|
|
1671 | char *name, *names; |
|
|
1672 | int namesalloc = 4096 - sizeof (void *) * 4; |
|
|
1673 | int namesoffs = 0; |
|
|
1674 | int flags = req->int1; |
|
|
1675 | eio_dirent *dents = 0; |
|
|
1676 | int dentalloc = 128; |
|
|
1677 | int dentoffs = 0; |
|
|
1678 | eio_ino_t inode_bits = 0; |
|
|
1679 | #ifdef _WIN32 |
|
|
1680 | HANDLE dirp; |
|
|
1681 | WIN32_FIND_DATA entp; |
|
|
1682 | #else |
900 | DIR *dirp; |
1683 | DIR *dirp; |
901 | EIO_STRUCT_DIRENT *entp; |
1684 | EIO_STRUCT_DIRENT *entp; |
902 | char *name, *names; |
1685 | #endif |
903 | int memlen = 4096; |
|
|
904 | int memofs = 0; |
|
|
905 | int res = 0; |
|
|
906 | |
1686 | |
907 | X_LOCK (wrklock); |
1687 | req->result = -1; |
|
|
1688 | |
|
|
1689 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1690 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
|
|
1691 | |
|
|
1692 | #ifdef _WIN32 |
|
|
1693 | { |
|
|
1694 | int len = strlen ((const char *)req->ptr1); |
|
|
1695 | char *path = malloc (MAX_PATH); |
|
|
1696 | const char *fmt; |
|
|
1697 | |
|
|
1698 | if (!len) |
|
|
1699 | fmt = "./*"; |
|
|
1700 | else if (((const char *)req->ptr1)[len - 1] == '/' || ((const char *)req->ptr1)[len - 1] == '\\') |
|
|
1701 | fmt = "%s*"; |
|
|
1702 | else |
|
|
1703 | fmt = "%s/*"; |
|
|
1704 | |
|
|
1705 | _snprintf (path, MAX_PATH, fmt, (const char *)req->ptr1); |
|
|
1706 | dirp = FindFirstFile (path, &entp); |
|
|
1707 | free (path); |
|
|
1708 | |
|
|
1709 | if (dirp == INVALID_HANDLE_VALUE) |
|
|
1710 | { |
|
|
1711 | dirp = 0; |
|
|
1712 | |
|
|
1713 | /* should steal _dosmaperr */ |
|
|
1714 | switch (GetLastError ()) |
|
|
1715 | { |
|
|
1716 | case ERROR_FILE_NOT_FOUND: |
|
|
1717 | req->result = 0; |
|
|
1718 | break; |
|
|
1719 | |
|
|
1720 | case ERROR_INVALID_NAME: |
|
|
1721 | case ERROR_PATH_NOT_FOUND: |
|
|
1722 | case ERROR_NO_MORE_FILES: |
|
|
1723 | errno = ENOENT; |
|
|
1724 | break; |
|
|
1725 | |
|
|
1726 | case ERROR_NOT_ENOUGH_MEMORY: |
|
|
1727 | errno = ENOMEM; |
|
|
1728 | break; |
|
|
1729 | |
|
|
1730 | default: |
|
|
1731 | errno = EINVAL; |
|
|
1732 | break; |
|
|
1733 | } |
|
|
1734 | } |
|
|
1735 | } |
|
|
1736 | #else |
908 | self->dirp = dirp = opendir (req->ptr1); |
1737 | dirp = opendir (req->ptr1); |
|
|
1738 | #endif |
|
|
1739 | |
909 | req->flags |= EIO_FLAG_PTR2_FREE; |
1740 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1741 | free (req->ptr1); |
|
|
1742 | |
|
|
1743 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1744 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
910 | req->ptr2 = names = malloc (memlen); |
1745 | req->ptr2 = names = malloc (namesalloc); |
911 | X_UNLOCK (wrklock); |
|
|
912 | |
1746 | |
913 | if (dirp && names) |
1747 | if (dirp && names && (!flags || dents)) |
914 | for (;;) |
1748 | for (;;) |
915 | { |
1749 | { |
|
|
1750 | int done; |
|
|
1751 | |
|
|
1752 | #ifdef _WIN32 |
|
|
1753 | done = !dirp; |
|
|
1754 | #else |
916 | errno = 0; |
1755 | errno = 0; |
917 | entp = readdir (dirp); |
1756 | entp = readdir (dirp); |
|
|
1757 | done = !entp; |
|
|
1758 | #endif |
918 | |
1759 | |
919 | if (!entp) |
1760 | if (done) |
|
|
1761 | { |
|
|
1762 | #ifndef _WIN32 |
|
|
1763 | int old_errno = errno; |
|
|
1764 | closedir (dirp); |
|
|
1765 | errno = old_errno; |
|
|
1766 | |
|
|
1767 | if (errno) |
|
|
1768 | break; |
|
|
1769 | #endif |
|
|
1770 | |
|
|
1771 | /* sort etc. */ |
|
|
1772 | req->int1 = flags; |
|
|
1773 | req->result = dentoffs; |
|
|
1774 | |
|
|
1775 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1776 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1777 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1778 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1779 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1780 | else |
|
|
1781 | { |
|
|
1782 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1783 | eio_dirent *oth = dents + dentoffs; |
|
|
1784 | eio_dirent *dir = dents; |
|
|
1785 | |
|
|
1786 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1787 | /* by walking from both sides and swapping if necessary */ |
|
|
1788 | while (oth > dir) |
|
|
1789 | { |
|
|
1790 | if (dir->type == EIO_DT_DIR) |
|
|
1791 | ++dir; |
|
|
1792 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1793 | { |
|
|
1794 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1795 | |
|
|
1796 | ++dir; |
|
|
1797 | } |
|
|
1798 | } |
|
|
1799 | |
|
|
1800 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1801 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1802 | } |
|
|
1803 | |
920 | break; |
1804 | break; |
|
|
1805 | } |
921 | |
1806 | |
922 | name = entp->d_name; |
1807 | /* now add the entry to our list(s) */ |
|
|
1808 | name = D_NAME (entp); |
923 | |
1809 | |
|
|
1810 | /* skip . and .. entries */ |
924 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1811 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
925 | { |
1812 | { |
926 | int len = strlen (name) + 1; |
1813 | int len = D_NAMLEN (entp) + 1; |
927 | |
1814 | |
928 | res++; |
1815 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
929 | |
|
|
930 | while (memofs + len > memlen) |
|
|
931 | { |
1816 | { |
932 | memlen *= 2; |
1817 | namesalloc *= 2; |
933 | X_LOCK (wrklock); |
|
|
934 | req->ptr2 = names = realloc (names, memlen); |
1818 | req->ptr2 = names = realloc (names, namesalloc); |
935 | X_UNLOCK (wrklock); |
|
|
936 | |
1819 | |
937 | if (!names) |
1820 | if (!names) |
938 | break; |
1821 | break; |
939 | } |
1822 | } |
940 | |
1823 | |
941 | memcpy (names + memofs, name, len); |
1824 | memcpy (names + namesoffs, name, len); |
|
|
1825 | |
|
|
1826 | if (dents) |
|
|
1827 | { |
|
|
1828 | struct eio_dirent *ent; |
|
|
1829 | |
|
|
1830 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1831 | { |
|
|
1832 | dentalloc *= 2; |
|
|
1833 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1834 | |
|
|
1835 | if (!dents) |
|
|
1836 | break; |
|
|
1837 | } |
|
|
1838 | |
|
|
1839 | ent = dents + dentoffs; |
|
|
1840 | |
|
|
1841 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1842 | ent->namelen = len - 1; |
|
|
1843 | ent->inode = D_INO (entp); |
|
|
1844 | |
|
|
1845 | inode_bits |= ent->inode; |
|
|
1846 | |
|
|
1847 | switch (D_TYPE (entp)) |
|
|
1848 | { |
|
|
1849 | default: |
|
|
1850 | ent->type = EIO_DT_UNKNOWN; |
|
|
1851 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1852 | break; |
|
|
1853 | |
|
|
1854 | #ifdef DT_FIFO |
|
|
1855 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1856 | #endif |
|
|
1857 | #ifdef DT_CHR |
|
|
1858 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1859 | #endif |
|
|
1860 | #ifdef DT_MPC |
|
|
1861 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1862 | #endif |
|
|
1863 | #ifdef DT_DIR |
|
|
1864 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1865 | #endif |
|
|
1866 | #ifdef DT_NAM |
|
|
1867 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1868 | #endif |
|
|
1869 | #ifdef DT_BLK |
|
|
1870 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1871 | #endif |
|
|
1872 | #ifdef DT_MPB |
|
|
1873 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1874 | #endif |
|
|
1875 | #ifdef DT_REG |
|
|
1876 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1877 | #endif |
|
|
1878 | #ifdef DT_NWK |
|
|
1879 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1880 | #endif |
|
|
1881 | #ifdef DT_CMP |
|
|
1882 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1883 | #endif |
|
|
1884 | #ifdef DT_LNK |
|
|
1885 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1886 | #endif |
|
|
1887 | #ifdef DT_SOCK |
|
|
1888 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1889 | #endif |
|
|
1890 | #ifdef DT_DOOR |
|
|
1891 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1892 | #endif |
|
|
1893 | #ifdef DT_WHT |
|
|
1894 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1895 | #endif |
|
|
1896 | } |
|
|
1897 | |
|
|
1898 | ent->score = 7; |
|
|
1899 | |
|
|
1900 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1901 | { |
|
|
1902 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1903 | { |
|
|
1904 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1905 | ent->score = 1; |
|
|
1906 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1907 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1908 | } |
|
|
1909 | else if (ent->type == EIO_DT_DIR) |
|
|
1910 | ent->score = 0; |
|
|
1911 | } |
|
|
1912 | } |
|
|
1913 | |
942 | memofs += len; |
1914 | namesoffs += len; |
|
|
1915 | ++dentoffs; |
943 | } |
1916 | } |
|
|
1917 | |
|
|
1918 | if (EIO_CANCELLED (req)) |
|
|
1919 | { |
|
|
1920 | errno = ECANCELED; |
|
|
1921 | break; |
|
|
1922 | } |
|
|
1923 | |
|
|
1924 | #ifdef _WIN32 |
|
|
1925 | if (!FindNextFile (dirp, &entp)) |
|
|
1926 | { |
|
|
1927 | FindClose (dirp); |
|
|
1928 | dirp = 0; |
|
|
1929 | } |
|
|
1930 | #endif |
944 | } |
1931 | } |
945 | |
|
|
946 | if (errno) |
|
|
947 | res = -1; |
|
|
948 | |
|
|
949 | req->result = res; |
|
|
950 | } |
1932 | } |
951 | |
1933 | |
952 | /*****************************************************************************/ |
1934 | /*****************************************************************************/ |
953 | |
1935 | |
954 | #define ALLOC(len) \ |
1936 | #define ALLOC(len) \ |
… | |
… | |
970 | { |
1952 | { |
971 | ETP_REQ *req; |
1953 | ETP_REQ *req; |
972 | struct timespec ts; |
1954 | struct timespec ts; |
973 | etp_worker *self = (etp_worker *)thr_arg; |
1955 | etp_worker *self = (etp_worker *)thr_arg; |
974 | |
1956 | |
|
|
1957 | #if HAVE_PRCTL_SET_NAME |
|
|
1958 | prctl (PR_SET_NAME, (unsigned long)"eio_thread", 0, 0, 0); |
|
|
1959 | #endif |
|
|
1960 | |
975 | /* try to distribute timeouts somewhat randomly */ |
1961 | /* try to distribute timeouts somewhat evenly */ |
976 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
1962 | ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL); |
977 | |
1963 | |
978 | for (;;) |
1964 | for (;;) |
979 | { |
1965 | { |
|
|
1966 | ts.tv_sec = 0; |
|
|
1967 | |
980 | X_LOCK (reqlock); |
1968 | X_LOCK (reqlock); |
981 | |
1969 | |
982 | for (;;) |
1970 | for (;;) |
983 | { |
1971 | { |
984 | self->req = req = reqq_shift (&req_queue); |
1972 | self->req = req = reqq_shift (&req_queue); |
985 | |
1973 | |
986 | if (req) |
1974 | if (req) |
987 | break; |
1975 | break; |
988 | |
1976 | |
|
|
1977 | if (ts.tv_sec == 1) /* no request, but timeout detected, let's quit */ |
|
|
1978 | { |
|
|
1979 | X_UNLOCK (reqlock); |
|
|
1980 | X_LOCK (wrklock); |
|
|
1981 | --started; |
|
|
1982 | X_UNLOCK (wrklock); |
|
|
1983 | goto quit; |
|
|
1984 | } |
|
|
1985 | |
989 | ++idle; |
1986 | ++idle; |
990 | |
1987 | |
991 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1988 | if (idle <= max_idle) |
992 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1989 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1990 | X_COND_WAIT (reqwait, reqlock); |
|
|
1991 | else |
993 | { |
1992 | { |
994 | if (idle > max_idle) |
1993 | /* initialise timeout once */ |
995 | { |
1994 | if (!ts.tv_sec) |
996 | --idle; |
1995 | ts.tv_sec = time (0) + idle_timeout; |
997 | X_UNLOCK (reqlock); |
|
|
998 | X_LOCK (wrklock); |
|
|
999 | --started; |
|
|
1000 | X_UNLOCK (wrklock); |
|
|
1001 | goto quit; |
|
|
1002 | } |
|
|
1003 | |
1996 | |
1004 | /* we are allowed to idle, so do so without any timeout */ |
|
|
1005 | X_COND_WAIT (reqwait, reqlock); |
1997 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
|
|
1998 | ts.tv_sec = 1; /* assuming this is not a value computed above.,.. */ |
1006 | } |
1999 | } |
1007 | |
2000 | |
1008 | --idle; |
2001 | --idle; |
1009 | } |
2002 | } |
1010 | |
2003 | |
… | |
… | |
1013 | X_UNLOCK (reqlock); |
2006 | X_UNLOCK (reqlock); |
1014 | |
2007 | |
1015 | if (req->type < 0) |
2008 | if (req->type < 0) |
1016 | goto quit; |
2009 | goto quit; |
1017 | |
2010 | |
1018 | if (!EIO_CANCELLED (req)) |
|
|
1019 | ETP_EXECUTE (self, req); |
2011 | ETP_EXECUTE (self, req); |
1020 | |
2012 | |
1021 | X_LOCK (reslock); |
2013 | X_LOCK (reslock); |
1022 | |
2014 | |
1023 | ++npending; |
2015 | ++npending; |
1024 | |
2016 | |
… | |
… | |
1039 | return 0; |
2031 | return 0; |
1040 | } |
2032 | } |
1041 | |
2033 | |
1042 | /*****************************************************************************/ |
2034 | /*****************************************************************************/ |
1043 | |
2035 | |
|
|
2036 | int ecb_cold |
1044 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2037 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1045 | { |
2038 | { |
|
|
2039 | #if !HAVE_PREADWRITE |
|
|
2040 | X_MUTEX_CREATE (preadwritelock); |
|
|
2041 | #endif |
|
|
2042 | |
1046 | return etp_init (want_poll, done_poll); |
2043 | return etp_init (want_poll, done_poll); |
1047 | } |
2044 | } |
1048 | |
2045 | |
|
|
2046 | ecb_inline void |
1049 | static void eio_api_destroy (eio_req *req) |
2047 | eio_api_destroy (eio_req *req) |
1050 | { |
2048 | { |
1051 | free (req); |
2049 | free (req); |
1052 | } |
2050 | } |
1053 | |
2051 | |
1054 | #define REQ(rtype) \ |
2052 | #define REQ(rtype) \ |
… | |
… | |
1073 | { \ |
2071 | { \ |
1074 | eio_api_destroy (req); \ |
2072 | eio_api_destroy (req); \ |
1075 | return 0; \ |
2073 | return 0; \ |
1076 | } |
2074 | } |
1077 | |
2075 | |
|
|
2076 | static void |
1078 | static void eio_execute (etp_worker *self, eio_req *req) |
2077 | eio_execute (etp_worker *self, eio_req *req) |
1079 | { |
2078 | { |
1080 | errno = 0; |
2079 | if (ecb_expect_false (EIO_CANCELLED (req))) |
|
|
2080 | { |
|
|
2081 | req->result = -1; |
|
|
2082 | req->errorno = ECANCELED; |
|
|
2083 | return; |
|
|
2084 | } |
1081 | |
2085 | |
1082 | switch (req->type) |
2086 | switch (req->type) |
1083 | { |
2087 | { |
1084 | case EIO_READ: ALLOC (req->size); |
2088 | case EIO_READ: ALLOC (req->size); |
1085 | req->result = req->offs >= 0 |
2089 | req->result = req->offs >= 0 |
… | |
… | |
1088 | case EIO_WRITE: req->result = req->offs >= 0 |
2092 | case EIO_WRITE: req->result = req->offs >= 0 |
1089 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
2093 | ? pwrite (req->int1, req->ptr2, req->size, req->offs) |
1090 | : write (req->int1, req->ptr2, req->size); break; |
2094 | : write (req->int1, req->ptr2, req->size); break; |
1091 | |
2095 | |
1092 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
2096 | case EIO_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break; |
1093 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size, self); break; |
2097 | case EIO_SENDFILE: req->result = eio__sendfile (req->int1, req->int2, req->offs, req->size); break; |
1094 | |
2098 | |
1095 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2099 | case EIO_STAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1096 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2100 | req->result = stat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1097 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2101 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1098 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2102 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1099 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
2103 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1100 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
2104 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
|
|
2105 | |
|
|
2106 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2107 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
2108 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
2109 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1101 | |
2110 | |
1102 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
2111 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1103 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2112 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1104 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
2113 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1105 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2114 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
… | |
… | |
1113 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
2122 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1114 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
2123 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1115 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
2124 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1116 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
2125 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1117 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
2126 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1118 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
2127 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1119 | |
2128 | |
|
|
2129 | case EIO_REALPATH: eio__realpath (req, self); break; |
|
|
2130 | |
1120 | case EIO_READLINK: ALLOC (NAME_MAX); |
2131 | case EIO_READLINK: ALLOC (PATH_MAX); |
1121 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
2132 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1122 | |
2133 | |
1123 | case EIO_SYNC: req->result = 0; sync (); break; |
2134 | case EIO_SYNC: req->result = 0; sync (); break; |
1124 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2135 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1125 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2136 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
|
|
2137 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
|
|
2138 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
|
|
2139 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
2140 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
|
|
2141 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
2142 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
|
|
2143 | case EIO_FALLOCATE: req->result = eio__fallocate (req->int1, req->int2, req->offs, req->size); break; |
1126 | |
2144 | |
1127 | case EIO_READDIR: eio__scandir (req, self); break; |
2145 | case EIO_READDIR: eio__scandir (req, self); break; |
1128 | |
2146 | |
1129 | case EIO_BUSY: |
2147 | case EIO_BUSY: |
1130 | #ifdef _WIN32 |
2148 | #ifdef _WIN32 |
1131 | Sleep (req->nv1 * 1000.); |
2149 | Sleep (req->nv1 * 1e3); |
1132 | #else |
2150 | #else |
1133 | { |
2151 | { |
1134 | struct timeval tv; |
2152 | struct timeval tv; |
1135 | |
2153 | |
1136 | tv.tv_sec = req->nv1; |
2154 | tv.tv_sec = req->nv1; |
1137 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
2155 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1138 | |
2156 | |
1139 | req->result = select (0, 0, 0, 0, &tv); |
2157 | req->result = select (0, 0, 0, 0, &tv); |
1140 | } |
2158 | } |
1141 | #endif |
2159 | #endif |
1142 | break; |
2160 | break; |
… | |
… | |
1157 | times = tv; |
2175 | times = tv; |
1158 | } |
2176 | } |
1159 | else |
2177 | else |
1160 | times = 0; |
2178 | times = 0; |
1161 | |
2179 | |
1162 | |
|
|
1163 | req->result = req->type == EIO_FUTIME |
2180 | req->result = req->type == EIO_FUTIME |
1164 | ? futimes (req->int1, times) |
2181 | ? futimes (req->int1, times) |
1165 | : utimes (req->ptr1, times); |
2182 | : utimes (req->ptr1, times); |
1166 | } |
2183 | } |
|
|
2184 | break; |
1167 | |
2185 | |
1168 | case EIO_GROUP: |
2186 | case EIO_GROUP: |
|
|
2187 | abort (); /* handled in eio_request */ |
|
|
2188 | |
1169 | case EIO_NOP: |
2189 | case EIO_NOP: |
1170 | req->result = 0; |
2190 | req->result = 0; |
1171 | break; |
2191 | break; |
1172 | |
2192 | |
1173 | case EIO_CUSTOM: |
2193 | case EIO_CUSTOM: |
1174 | req->feed (req); |
2194 | req->feed (req); |
1175 | break; |
2195 | break; |
1176 | |
2196 | |
1177 | default: |
2197 | default: |
|
|
2198 | errno = ENOSYS; |
1178 | req->result = -1; |
2199 | req->result = -1; |
1179 | break; |
2200 | break; |
1180 | } |
2201 | } |
1181 | |
2202 | |
1182 | req->errorno = errno; |
2203 | req->errorno = errno; |
… | |
… | |
1202 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
2223 | eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data) |
1203 | { |
2224 | { |
1204 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
2225 | REQ (EIO_FSYNC); req->int1 = fd; SEND; |
1205 | } |
2226 | } |
1206 | |
2227 | |
|
|
2228 | eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2229 | { |
|
|
2230 | REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2231 | } |
|
|
2232 | |
1207 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
2233 | eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data) |
1208 | { |
2234 | { |
1209 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
2235 | REQ (EIO_FDATASYNC); req->int1 = fd; SEND; |
1210 | } |
2236 | } |
1211 | |
2237 | |
|
|
2238 | eio_req *eio_syncfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2239 | { |
|
|
2240 | REQ (EIO_SYNCFS); req->int1 = fd; SEND; |
|
|
2241 | } |
|
|
2242 | |
|
|
2243 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
|
|
2244 | { |
|
|
2245 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
|
|
2246 | } |
|
|
2247 | |
|
|
2248 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
|
|
2249 | { |
|
|
2250 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
|
|
2251 | } |
|
|
2252 | |
|
|
2253 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
2254 | { |
|
|
2255 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
2256 | } |
|
|
2257 | |
|
|
2258 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
2259 | { |
|
|
2260 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
2261 | } |
|
|
2262 | |
|
|
2263 | eio_req *eio_fallocate (int fd, int mode, off_t offset, size_t len, int pri, eio_cb cb, void *data) |
|
|
2264 | { |
|
|
2265 | REQ (EIO_FALLOCATE); req->int1 = fd; req->int2 = mode; req->offs = offset; req->size = len; SEND; |
|
|
2266 | } |
|
|
2267 | |
1212 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
2268 | eio_req *eio_close (int fd, int pri, eio_cb cb, void *data) |
1213 | { |
2269 | { |
1214 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
2270 | REQ (EIO_CLOSE); req->int1 = fd; SEND; |
1215 | } |
2271 | } |
1216 | |
2272 | |
… | |
… | |
1232 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
2288 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1233 | { |
2289 | { |
1234 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
2290 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1235 | } |
2291 | } |
1236 | |
2292 | |
|
|
2293 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
2294 | { |
|
|
2295 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
|
|
2296 | } |
|
|
2297 | |
1237 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
2298 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1238 | { |
2299 | { |
1239 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
2300 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1240 | } |
2301 | } |
1241 | |
2302 | |
… | |
… | |
1247 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
2308 | eio_req *eio_fchmod (int fd, mode_t mode, int pri, eio_cb cb, void *data) |
1248 | { |
2309 | { |
1249 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
2310 | REQ (EIO_FCHMOD); req->int1 = fd; req->int2 = (long)mode; SEND; |
1250 | } |
2311 | } |
1251 | |
2312 | |
1252 | eio_req *eio_fchown (int fd, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2313 | eio_req *eio_fchown (int fd, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1253 | { |
2314 | { |
1254 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2315 | REQ (EIO_FCHOWN); req->int1 = fd; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1255 | } |
2316 | } |
1256 | |
2317 | |
1257 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
2318 | eio_req *eio_dup2 (int fd, int fd2, int pri, eio_cb cb, void *data) |
… | |
… | |
1277 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
2338 | eio_req *eio_truncate (const char *path, off_t offset, int pri, eio_cb cb, void *data) |
1278 | { |
2339 | { |
1279 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
2340 | REQ (EIO_TRUNCATE); PATH; req->offs = offset; SEND; |
1280 | } |
2341 | } |
1281 | |
2342 | |
1282 | eio_req *eio_chown (const char *path, uid_t uid, gid_t gid, int pri, eio_cb cb, void *data) |
2343 | eio_req *eio_chown (const char *path, eio_uid_t uid, eio_gid_t gid, int pri, eio_cb cb, void *data) |
1283 | { |
2344 | { |
1284 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
2345 | REQ (EIO_CHOWN); PATH; req->int2 = (long)uid; req->int3 = (long)gid; SEND; |
1285 | } |
2346 | } |
1286 | |
2347 | |
1287 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
2348 | eio_req *eio_chmod (const char *path, mode_t mode, int pri, eio_cb cb, void *data) |
… | |
… | |
1303 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
2364 | eio_req *eio_readlink (const char *path, int pri, eio_cb cb, void *data) |
1304 | { |
2365 | { |
1305 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
2366 | return eio__1path (EIO_READLINK, path, pri, cb, data); |
1306 | } |
2367 | } |
1307 | |
2368 | |
|
|
2369 | eio_req *eio_realpath (const char *path, int pri, eio_cb cb, void *data) |
|
|
2370 | { |
|
|
2371 | return eio__1path (EIO_REALPATH, path, pri, cb, data); |
|
|
2372 | } |
|
|
2373 | |
1308 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
2374 | eio_req *eio_stat (const char *path, int pri, eio_cb cb, void *data) |
1309 | { |
2375 | { |
1310 | return eio__1path (EIO_STAT, path, pri, cb, data); |
2376 | return eio__1path (EIO_STAT, path, pri, cb, data); |
1311 | } |
2377 | } |
1312 | |
2378 | |
1313 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2379 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1314 | { |
2380 | { |
1315 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2381 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1316 | } |
2382 | } |
1317 | |
2383 | |
|
|
2384 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2385 | { |
|
|
2386 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2387 | } |
|
|
2388 | |
1318 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2389 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1319 | { |
2390 | { |
1320 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2391 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1321 | } |
2392 | } |
1322 | |
2393 | |
1323 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
2394 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1324 | { |
2395 | { |
1325 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
2396 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1326 | } |
2397 | } |
1327 | |
2398 | |
1328 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) |
2399 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1329 | { |
2400 | { |
1330 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
2401 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1331 | } |
2402 | } |
1332 | |
2403 | |
1333 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2404 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1334 | { |
2405 | { |
1335 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2406 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1336 | } |
2407 | } |
1337 | |
2408 | |
1338 | static eio_req * |
2409 | static eio_req * |
1339 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2410 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1340 | { |
2411 | { |
… | |
… | |
1364 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2435 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1365 | { |
2436 | { |
1366 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2437 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1367 | } |
2438 | } |
1368 | |
2439 | |
1369 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2440 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1370 | { |
2441 | { |
1371 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2442 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1372 | } |
2443 | } |
1373 | |
2444 | |
1374 | #endif |
2445 | #endif |
… | |
… | |
1385 | #undef SEND |
2456 | #undef SEND |
1386 | |
2457 | |
1387 | /*****************************************************************************/ |
2458 | /*****************************************************************************/ |
1388 | /* grp functions */ |
2459 | /* grp functions */ |
1389 | |
2460 | |
|
|
2461 | void |
1390 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2462 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1391 | { |
2463 | { |
1392 | grp->int2 = limit; |
2464 | grp->int2 = limit; |
1393 | grp->feed = feed; |
2465 | grp->feed = feed; |
1394 | |
2466 | |
1395 | grp_try_feed (grp); |
2467 | grp_try_feed (grp); |
1396 | } |
2468 | } |
1397 | |
2469 | |
|
|
2470 | void |
1398 | void eio_grp_limit (eio_req *grp, int limit) |
2471 | eio_grp_limit (eio_req *grp, int limit) |
1399 | { |
2472 | { |
1400 | grp->int2 = limit; |
2473 | grp->int2 = limit; |
1401 | |
2474 | |
1402 | grp_try_feed (grp); |
2475 | grp_try_feed (grp); |
1403 | } |
2476 | } |
1404 | |
2477 | |
|
|
2478 | void |
1405 | void eio_grp_add (eio_req *grp, eio_req *req) |
2479 | eio_grp_add (eio_req *grp, eio_req *req) |
1406 | { |
2480 | { |
1407 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2481 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
|
|
2482 | |
|
|
2483 | grp->flags |= EIO_FLAG_GROUPADD; |
1408 | |
2484 | |
1409 | ++grp->size; |
2485 | ++grp->size; |
1410 | req->grp = grp; |
2486 | req->grp = grp; |
1411 | |
2487 | |
1412 | req->grp_prev = 0; |
2488 | req->grp_prev = 0; |
… | |
… | |
1419 | } |
2495 | } |
1420 | |
2496 | |
1421 | /*****************************************************************************/ |
2497 | /*****************************************************************************/ |
1422 | /* misc garbage */ |
2498 | /* misc garbage */ |
1423 | |
2499 | |
|
|
2500 | eio_ssize_t |
1424 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2501 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1425 | { |
2502 | { |
1426 | etp_worker wrk; |
|
|
1427 | |
|
|
1428 | wrk.dbuf = 0; |
|
|
1429 | |
|
|
1430 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
2503 | return eio__sendfile (ofd, ifd, offset, count); |
1431 | |
|
|
1432 | if (wrk.dbuf) |
|
|
1433 | free (wrk.dbuf); |
|
|
1434 | } |
2504 | } |
1435 | |
2505 | |